I had figured this out on a previous project for halloween, but I lost my original code and now Im banging my head on how I figured it out before.

I have LPD8806 strip of LEDS. I want to get the "pulse" effect, where the entire strip goes on and off via the Sine wave.. nice smooth transition.

The Wave effect does this, but it passes through the entire strip. I just want to modify it to do the same for every LED at the same time. I'm fairly certain that I did a simple modification to the Wave function to do this the last time. If i didnt, its probably why Im not figuring this out.